Nonhuman Primate

Early social deprivation negatively affects social skill acquisition in chimpanzees (Pan troglodytes)

In a highly social species like chimpanzees, the process by which individuals become attuned to their social environment may be of vital importance to their chances of survival. Typically, this socialization process, defined by all acquisition experiences and fine-tuning efforts...

Year Published: 2014Topics: Rearing & Weaning, Social Housing & CompanionshipAnimal Type: Chimpanzee, Nonhuman Primate

Citation: van Leeuwen, E. J. C., Mulenga, I. C., Chidester, D. L. 2014. Early social deprivation negatively affects social skill acquisition in chimpanzees (Pan troglodytes). Animal Cognition 17(2), 407–414.

Stereotypic head twirls, but not pacing, are related to a ‘pessimistic’-like judgment bias among captive tufted capuchins (Cebus apella)

Abnormal stereotypic behaviour is widespread among captive non-human primates and is generally associated with jeopardized well-being. However, attributing the same significance to all of these repetitive, unvarying and apparently functionless behaviours may be misleading, as some behaviours may be better...

Year Published: 2012Topics: Abnormal/Problematic Behavior, Welfare AssessmentAnimal Type: Capuchin, Nonhuman Primate

Citation: Pomerantz, O., Terkel, J., Suomi, S. J. et al. 2012. Stereotypic head twirls, but not pacing, are related to a ‘pessimistic'-like judgment bias among captive tufted capuchins (Cebus apella). Animal Cognition 15(4), 689–698.

A fine-scale and minimally invasive marking method for use with conventional tungsten microelectrodes

In neurophysiology, achieving precise correlation between physiological responses and anatomic structures is a significant challenge. Therefore, the accuracy of the electrode marking method is crucial. In this study, we describe a tungsten-deposition method, in which tungsten oxide is generated by...

Year Published: 2023Topics: Imaging & Electrophysiological RecordingAnimal Type: Macaque, Mouse, Nonhuman Primate, Rodent

Citation: Oikawa, T., Nomura, K., Hara, T. et al. 2023. A fine-scale and minimally invasive marking method for use with conventional tungsten microelectrodes. eNeuro 10(9), ENEURO.0141-23.2023.

Mechanisms underlying cognitive bias in nonhuman primates

Recent research in nonhuman animals highlights the exciting possibility that performance on cognitive bias tasks might indirectly measure an individual's subjective, affective state. Subjects first learn to perform a conditional discrimination task with two differentially reinforced responses, and then intermediate,...

Year Published: 2017Topics: Welfare AssessmentAnimal Type: Capuchin, Macaque, Nonhuman Primate

Citation: Perdue, B. 2017. Mechanisms underlying cognitive bias in nonhuman primates. Animal Behavior and Cognition 4(1), 105–118.

A comparison of oocyte yield between ultrasound-guided and laparoscopic oocyte retrieval in rhesus macaques

Obtaining quality oocytes is a prerequisite for ART-based studies. Here we describe a method for transabdominal ultrasound-guided (US) oocyte retrieval in rhesus macaques (Macaca mullata) and compare it to the standard surgical approach using laparoscopy (LAP). We analyzed oocyte yield...

Year Published: 2023Topics: Reproduction, Surgery & Post-OpAnimal Type: Macaque, Nonhuman Primate

Citation: Piekarski, N., Hobbs, T. R., Jacob, D. et al. 2023. A comparison of oocyte yield between ultrasound-guided and laparoscopic oocyte retrieval in rhesus macaques. Animals 13(19), 3017.

Effects of enclosure and environmental enrichment on the behaviour of ring-tailed lemurs (Lemur catta)

Environmental enrichment is widely used to improve the quality of life of animals under human care. To successfully implement enrichment programs, it is important to evaluate their effect in different enclosure types since housing conditions may change depending on external...

Year Published: 2021Topics: Environmental Enrichment, HousingAnimal Type: Lemur, Nonhuman Primate

Citation: Laméris, D. W., Verspeek, J., Depoortere, A. et al. 2021. Effects of enclosure and environmental enrichment on the behaviour of ring-tailed lemurs (Lemur catta). Journal of Zoological and Botanical Gardens 2(2), 164–173.

Euthanasia complications in non-domestic species

There are very few studies describing euthanasia complications in non-domestic species. The goal of this study was to survey veterinarians to determine what complications may commonly occur during the euthanasia of non-domestic species. An online survey was sent to seven...

Year Published: 2022Topics: EuthanasiaAnimal Type: Amphibian, Bird, Fish, Marine Mammal, Nonhuman Primate, Other Animal, Other Bird, Other Fish, Parrot, Reptile, Shark & Ray

Citation: Hepps Keeney, C., Harrison, T. M. 2022. Euthanasia complications in non-domestic species. Journal of Zoological and Botanical Gardens 3(4), 616–623.

Choice, control, and animal welfare: Definitions and essential inquiries to advance animal welfare science

The ways in which humans can support good welfare for animals in their care is an ongoing subject of debate: some place emphasis on the animals' physical health; others, on animals' ability to live “natural lives”; and others on animals'...

Year Published: 2023Topics: Environmental Enrichment, Natural BehaviorAnimal Type: All/General, Macaque, Nonhuman Primate

Citation: Englund, M. D., Cronin, K. A. 2023. Choice, control, and animal welfare: Definitions and essential inquiries to advance animal welfare science. Frontiers in Veterinary Science 10.

Automated cognitive testing of monkeys in social groups yields results comparable to individual laboratory-based testing

Cognitive abilities likely evolved in response to specific environmental and social challenges and are therefore expected to be specialized for the life history of each species. Specialized cognitive abilities may be most readily engaged under conditions that approximate the natural...

Year Published: 2013Topics: Behavioral & Cognitive Testing, Housing, Social Housing & CompanionshipAnimal Type: Macaque, Nonhuman Primate

Citation: Gazes, R. P., Brown, E. K., Basile, B. M. et al. 2013. Automated cognitive testing of monkeys in social groups yields results comparable to individual laboratory-based testing. Animal Cognition 16(3), 445–458.

In the zone: Towards a comparative study of flow state in primates

Flow is an altered state of feeling ‘in the zone' when fully absorbed in a challenge and is associated with positive affective state (feelings). Despite almost five decades of research, Flow has not yet been recognized in nonhuman animals, despite...

Year Published: 2023Topics: Emotion, Pain, & Sentience, Environmental EnrichmentAnimal Type: Chimpanzee, Macaque, Nonhuman Primate

Citation: Clark, F. E. 2023. In the zone: Towards a comparative study of flow state in primates. Animal Behavior and Cognition 10(1), 62–88.